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// Copyright 2020 The Pigweed Authors
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
#include <array>
#include <span>
#include <string_view>
#include "pw_assert/assert.h"
#include "pw_hdlc/encoder.h"
#include "pw_hdlc/rpc_channel.h"
#include "pw_hdlc/rpc_packets.h"
#include "pw_log/log.h"
#include "pw_rpc/echo_service_nanopb.h"
#include "pw_rpc/server.h"
#include "pw_stream/sys_io_stream.h"
#include "simple_counter/simple_counter.h"
namespace {
// Max number of bytes sent in an RPC packet.
constexpr size_t kMaxTransmissionUnit = 256;
// Used to write HDLC data to pw::sys_io.
pw::stream::SysIoWriter writer;
// Set up the output channel for the pw_rpc server to use to use.
pw::hdlc::RpcChannelOutputBuffer<kMaxTransmissionUnit> hdlc_channel_output(
writer, pw::hdlc::kDefaultRpcAddress, "HDLC channel");
pw::rpc::Channel channels[] = {
// Declare the pw_rpc server with the HDLC channel.
pw::rpc::Server server(channels);
pw::rpc::EchoService echo_service;
} // namespace
void RegisterServices() { server.RegisterService(echo_service); }
// Creates and runs an RPC server, with an echo service echoing data from RPCs.
void CreateAndRunRpcServerWithEchoService() {
// Set up the server and start processing data.
// Declare a buffer for decoding incoming HDLC frames.
std::array<std::byte, kMaxTransmissionUnit> input_buffer;
server, hdlc_channel_output, input_buffer, pw::hdlc::kDefaultRpcAddress);
int main() {
// Use sample Module
sample::SimpleCounter counter(3);
// Sample assert. Adding a message is optional.
PW_CHECK_INT_EQ(counter.GetCount(), 2);
// Chance this value to see the assert below crash the app.
const int expected_count = 12;
// Use sample assert with a message.
"Counter value %d != %d as expected",
PW_LOG_INFO("Tokenize strings 'cause");
PW_LOG_DEBUG("logs create bloated binaries");
PW_LOG_CRITICAL("this string does not count.");
// Loops processing RPCs.
return 0;